Baumuller b maXX BM5800 - Motor; Motor Identification Plate; Torque Limits

Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
81
of 814
3
3.4.2 Motor
3.4.2.1 Motor Identification Plate
Stegmann and Heidenhain encoders provide the option of storing OEM data in their
EEPROM. This memory is used to store the following information in the encoders:
m Notch angle offset
m Machine characteristics
m Encoder characteristics
m Motor ordering code
The data structure of the OEM memory follows the Baumüller standard, as already imple-
mented on the b maXX 4400. Thus identification plates can also be read from encoders
which were previously used in b
maXX 4400 drives and conversely.
3.4.2.2 Torque limits
Display maximum torque
The parameter Z138.20– "Max. torque actual value" represents the maximum internal
torque of the motor M
max act
and is proportional to the maximum torque current I
sq max
.
with
I
sq max
Maximum torque current in A: "Max. torque current actual value" Z138.30–
Flux
set
Magnetic flux set value in % Z146.13–
Kt
upd
Kt updated Z155.24–, in Nm/A
The maximum torque current I
sq max
is calculated from the "Max. drive current actual val-
ue" Z19.5– I
max act
and with subtraction of the field current. The "Max. drive current actual
value" Z19.5– in general is the same as the maximum drive current Z19.6–. However,
this current and the actual maximum torque can be reduced by the power unit overload
monitoring (refer to "Bit mask of external drive current limit"
Z138.8–).
NOTE!
If the Kt factor Z107.44– is set to zero, then the torque limit is suspended. This state
is achieved by setting the Nominal power Z107.6– to 0 kW. If the Kt correction factor
Z138.23– is set to zero, then the torque limit limits the torque current to 0 A.
M
max act
I
sq max
Kt
upd
Flux
set
[%]=